EP4202897A3 - Method and apparatus for detecting ambient light under display screen, and electronic device - Google Patents

Method and apparatus for detecting ambient light under display screen, and electronic device Download PDF

Info

Publication number
EP4202897A3
EP4202897A3 EP22212446.3A EP22212446A EP4202897A3 EP 4202897 A3 EP4202897 A3 EP 4202897A3 EP 22212446 A EP22212446 A EP 22212446A EP 4202897 A3 EP4202897 A3 EP 4202897A3
Authority
EP
European Patent Office
Prior art keywords
display screen
ambient light
sampling
electronic device
period
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22212446.3A
Other languages
German (de)
French (fr)
Other versions
EP4202897A2 (en
Inventor
Mingsong WEI
Xiangyu Yang
Luming Zhou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Goodix Technology Co Ltd
Original Assignee
Shenzhen Goodix Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Goodix Technology Co Ltd filed Critical Shenzhen Goodix Technology Co Ltd
Publication of EP4202897A2 publication Critical patent/EP4202897A2/en
Publication of EP4202897A3 publication Critical patent/EP4202897A3/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4204—Photometry, e.g. photographic exposure meter using electric radiation detectors with determination of ambient light
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0237—Switching ON and OFF the backlight within one frame
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • H04N5/58—Control of contrast or brightness in dependence upon ambient light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The present application provides a method, apparatus, and electronic device for detecting ambient light under a display screen, which could reduce the influence of a light leak from a screen on detection of the ambient light. The method includes: generating (110) an interval identification signal for screen light of the display screen according to a dimming period of the display screen, the interval identification signal being used to identify the screen light that is within a specific time interval in the dimming period; performing (120) data collection according to a sampling signal; reading (130) data of a target sampling period from data of a plurality of sampling periods of the sampling signal according to the interval identification signal, the target sampling period being a sampling period in which sampling time overlaps with the specific time interval in time; and detecting (140) the ambient light according to the data of the target sampling period.
EP22212446.3A 2021-12-27 2022-12-09 Method and apparatus for detecting ambient light under display screen, and electronic device Pending EP4202897A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111618420.2A CN114333735B (en) 2021-12-27 2021-12-27 Method and device for detecting ambient light under display screen and electronic equipment

Publications (2)

Publication Number Publication Date
EP4202897A2 EP4202897A2 (en) 2023-06-28
EP4202897A3 true EP4202897A3 (en) 2023-10-11

Family

ID=81015256

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22212446.3A Pending EP4202897A3 (en) 2021-12-27 2022-12-09 Method and apparatus for detecting ambient light under display screen, and electronic device

Country Status (3)

Country Link
US (1) US20230204413A1 (en)
EP (1) EP4202897A3 (en)
CN (1) CN114333735B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115290299B (en) * 2022-09-30 2023-04-07 深圳市汇顶科技股份有限公司 Method and device for determining falling depth of screen light leakage and electronic equipment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8933916B1 (en) * 2012-06-26 2015-01-13 Jeffrey B. Doar Ambient light sensing for display
US9622326B1 (en) * 2015-12-18 2017-04-11 Amazon Technologies, Inc. Method and device for determining emitted light intensity level
US20210319753A1 (en) * 2018-08-02 2021-10-14 Ams Ag Ambient light sensing system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008096805A (en) * 2006-10-13 2008-04-24 Matsushita Electric Ind Co Ltd Projector and projector system
JP2009058342A (en) * 2007-08-31 2009-03-19 Seiko Epson Corp Sensing circuit, photodetection circuit, electro-optical device and electronic device
JP2013120991A (en) * 2011-12-06 2013-06-17 Hitachi Consumer Electronics Co Ltd Image display apparatus
CN103052218A (en) * 2012-12-14 2013-04-17 重庆恒又源科技发展有限公司 Control method and system of multiple LED (Light Emitting Diode) lamps
CN107917755A (en) * 2017-11-22 2018-04-17 广东欧珀移动通信有限公司 Environment light detection method, device, storage medium and electronic equipment
CN107979698B (en) * 2017-11-22 2020-05-12 Oppo广东移动通信有限公司 Ambient light intensity detection method and device, storage medium and electronic equipment
CN112242119A (en) * 2019-07-16 2021-01-19 北京小米移动软件有限公司 Terminal, display parameter control method and device, and storage medium
CN112710388B (en) * 2019-10-24 2022-07-01 北京小米移动软件有限公司 Ambient light detection method, ambient light detection device, terminal device, and storage medium
CN113077738B (en) * 2020-01-03 2024-04-09 北京小米移动软件有限公司 Ambient light detection method and device and storage medium
CN112187391B (en) * 2020-09-04 2022-07-29 烽火通信科技股份有限公司 Oversampling clock data recovery method and system for loop bandwidth dynamic adjustment
CN112985588A (en) * 2021-02-05 2021-06-18 深圳市汇顶科技股份有限公司 Terminal device, optical signal processing method, and storage medium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8933916B1 (en) * 2012-06-26 2015-01-13 Jeffrey B. Doar Ambient light sensing for display
US9622326B1 (en) * 2015-12-18 2017-04-11 Amazon Technologies, Inc. Method and device for determining emitted light intensity level
US20210319753A1 (en) * 2018-08-02 2021-10-14 Ams Ag Ambient light sensing system

Also Published As

Publication number Publication date
EP4202897A2 (en) 2023-06-28
CN114333735A (en) 2022-04-12
US20230204413A1 (en) 2023-06-29
CN114333735B (en) 2023-07-14

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